Electrically-heated oven.



H. P. BALL.

ELEGTBIGALLY HEATED OVEN.

APPLICATION FILED MAR. 17, 1913.

Patented A r. 28, 1914.

Henry Price Bal I, y M9 His Attorriey.

UNITED STATES PATENT @FFIQE.

HENRY PRICE BALL, PITTSFIELI), MASSACHUSETTS, ASSIGNOR TO GENERALELECTRIC COMPANY, A CORPORATION 01. NEW YORK.

ELECTRICALLY-HEATED GVEN.

To all whom it may concern Be it known that I, HENRY Pinon BALL, acitizen of the United States, residing at littsfield, in the county ofBerkshire, State of Massachusetts. have invented certain new and usefulImprovements in Electricallylieated Ovens, of which the following is aspecification.

My invention relates to electrically heated cooking devices, and moreparticularly to electrically heated ovens provided with electricresistance units and are suitable for operations such as broiling,roasting and baking.

- The object of my invention is to provide an oven in which the sameheating unit or units may be efficiently utilized for any of theaforesaid operations.

In performing such operations as broiling it is desirable that a unit belocated at the top of the oven so that the heat may be showered downupon the article to be broiled. In operations such as roasting, on thecontrary, it is desirable that the unit be vertically disposed so thatthe distribution of heat be as uniform as possible. In both the broilingand roasting operations it is desirable that the heating unit be locatedas close as possible to the article being cooked. In certain otheroperations such as baking which do not require as high heat and whichrequire more space the heating i units should preferably be located at agreater distance from the aforesaid articles.

According to my invention a pair of substantially fiat electricresistance heating units are pivotally mounted in the oven in such a waythat they may be swung to horizontal or vertical positions therein. Thepi votal mounting is such that when the units are in their verticalposition, there is just enough space between them for the pan which isto hold the roast. To provide for the ready regulation of the distancebetween the article to be cooked and the units in their horizontalpositions, I provide a removable shelf and a series of superposedsupports therefor.

My invention will be more thoroughly understood by referring to theaccompanying drawings in which- Figure 1 is a transverse verticalsection and Fig. 2 is a lon itudinal vertical seclion of an oven emboying my invention.

Specification of Letters Patent.

Application filed March 17, 1913.

Patented Apr. 28, 1914. Serial No. 754,701.

In the drawing 10 and 11 are inner and outer metallic shells betweenwhich is packed any suitable heat insulating material 12 to form thestationary casing of the oven. An electric furnace sublimation productcontaining silicon such as that disclosed in Arthur application, Ser.No. 718,825, filed Sept. 6, 1912, and which has a very high insulationvalue would be suitable for this purpose. Within the oven are mountedtwo electric resistance heating units 13, one being mounted on the topwall of the oven and the other on the bottom of the same. These unitsmay be such as that disclosed in Cubitt Patent #964,759. Each of thesaid units is pivotally mounted at 14 and spring latching means 15serves to hold each of the units in its horizontal position. The pivotalaxes of the units are in opposite sides, that of the top unit beinglocated at the left thereof and that of the other at the right thereof.iVhen the units are in vertical position, a compartment is formedtherebetween of substantially the width ofthe units, or somewhat widerif so desired. As shown in dotted lines in Fig. l, the upper unit may beswung upwardly and the lower unit downwardly to a-vertical position. Theconductors 16 which serve to connect the resistance elements of theheating units to the external circuit extend through metal bushings 17and are attached to insulating plugs 18 fitting therein. The saidbushings are located in line with the pivotal axes of the respectiveunits. A series of superposed supporting flanges 19 are located on eachside of the oven and a removable shelf 20 is adapted to be supportedthereby.

When it is desired to perform the broiling operation, the article to bebroiled may be placed upon the shelf 20, and the distance from theheating units adjusted by placing the said shelf upon any desired pairof the supports 19. A baking operation may also be performed with theunits in a horizontal position. When it is desired to erform anoperation such as roasting, the s "elf 20 should be removed from theoven. The heating units should then be swung to their verticalpositions. The roast supported by the usual drip pan may then be placedbetween the units. It has been found that the roasting operation may beperformed in an ment-isforrned by. the heating units, thus t ::;..i,=L-reducing the mtervemng air space and causing the heat to be veryefficiently conducted to the roast.

Various modifications of the above described structure will readilysuggest themselves to those skilled in the art, in order to beconsidered as coming within the scope of my invention set forth in thefollowing claitfis; claim as new and desire to secure by LettersPatent-or the United States is 1. All electrically heated ovencomprising a stationary casing, a substantially flat esistance heatingunit mounted therein,

I meats -whereby the said unit may be made to 1 as ineja substantiallyhorizontal or a subls't' tially vertical position as desired, and l forsupportin an article to be heated within the casing when the unitoccupies either position. a

electrically heated oven compris- High-stationar casing, a substantiallyflat titanic, resistance heating unit pivotally moiinted therein, thepivotal axis being substantialiy horizontal, and means for supporting anarticle to be heated within the I 1,oe4,771

4.- An electrically heated oven comprising I a stationary casing and apair of fiat electric resistance heatmg units movably mounted therein soas to assume either horizontal or vertical positions and spaced apart toreceive the articles to be heated between them in either position ofsaid-units.

5'. An electrically heated oven compris- HENRY PRICE BALL.

Witnesses;

MAUDE J. Rnrnonns, H. B. DAVERIN.

